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RDS: use kfree_rcu in rds_ib_remove_ipaddr 

synchronize_rcu() slowing down un-necessarily the socket shutdown
path. It is used just kfree() the ip addresses in rds_ib_remove_ipaddr()
which is perfect usecase for kfree_rcu();

So lets use that to gain some speedup.

Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
This commit is contained in:
Santosh Shilimkar 2012-02-03 11:09:23 -05:00 committed by Santosh Shilimkar
parent 6ff33f3902
commit 59fe460674
2 changed files with 3 additions and 4 deletions
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1
net/rds/ib.h
View File

@ -164,6 +164,7 @@ struct rds_ib_connection {
struct rds_ib_ipaddr {
struct list_head list;
__be32 ipaddr;
struct rcu_head rcu;
};
struct rds_ib_device {

6
net/rds/ib_rdma.c
View File

@ -159,10 +159,8 @@ static void rds_ib_remove_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr)
}
spin_unlock_irq(&rds_ibdev->spinlock);
if (to_free) {
synchronize_rcu();
kfree(to_free);
}
if (to_free)
kfree_rcu(to_free, rcu);
}
int rds_ib_update_ipaddr(struct rds_ib_device *rds_ibdev, __be32 ipaddr)